Stovepipe-thimble and flue-cap.



No. 804,208. PATENTED NOV. 14, 1905.

" A.T.BUROH.

STOVBPIPB THIMBLE AND FLUE GAP. APPLIOATION nun AUG. 4, 1904.

Witnesses UNITED STATES PATEN OFFICE.

STOVEPIPE-THIIVIBLE AND FLUE-CAP.

Specification of Letters Patent.

Patented Nov. 14, 1905.

Application filed ugust 4, 1904. Serial No. 219,512-

To all whom it may concern:

Be it known that I, ALFRED T. BURCH, a citizen of the United States,residing at Harvard, in the county of McHenry and State of Illinois,have invented a new and useful Stovepipe- Thimble and Flue-Cap, of whichthe following is a specification.

This invention relates to a combined stovepipe-thimble and flue-cap, andhas for its object to provide a simple, inexpensive, and efair-chamber,and,further, to provide means {3r securely locking the cap within thethim- The invention consists in the construction and novel combinationand arrangement of parts hereinafter fully described, illustrated in theaccompanying drawings, and pointed out in the claims hereto appended, itbeing understood that various changes in form, proportion, and minordetails of construction may be resorted to without departingfrom theprinciple or sacrificing any of the advantages of this invention.

In the accompanying drawings, forming a part of this specification,Figure 1 is a longitudinal sectional view of the thimble and cap,showing the same in position in a chimneybreast. Fig. 2 is a detailperspective view of the thimble and cap detached. Fig. 3 is alongitudinal sectional view showing the fluecap removed and a section ofstovepipe inserted in the thimble. Fig. 4 is aperspective view of thecollar detached.

Similar numerals of reference indicate corresponding parts in all thefigures of the drawings.

The invention consists of a thimble 5, the cylindrical body portion ofwhich engages the opening 6 in the chimney-breast, as shown, while theforward end thereof is extended laterally to form an annular socket 7for the reception of the head of the flue-cap 8. The

cap 8 is provided with an enlarged head 9, the walls of which are spacedapart to form an annular air-chamber 10, which communicates With acylindrical air-chamber 11, formed by closing the rear end of thecylindrical body portion of the cap with a disk of asbestos or othersuitable non-combustible material 12. The asbestos 12 is retained inposition by an annular flange 13, formed on the rear end of the cap 8,and is held in engagement with said flange by transversely-disposedstrips or bars 1 1, secured in any suitable manner to the side walls ofthe cap, as shown. The asbestos disk forms a closure for the inner endof the cap and serves to confine a body of air within the chamber 11,while the chamber 10 in the enlarged head of the cap prevents the heatconducted by the metal walls of said cap fromv unduly heating the headof the latter and the adjacent woodwork or other material. The cap isprovided with oppositely-disposed locking lugs or pins 15, adapted toengage bayonet-slots 16, formed in the cylindrical body portion of thethimble, so that when the cap is introduced in the thimble and given aslight turn the parts will be securely locked together. The rear wall ofthe head 9 is extended to form an inclined flange 17, and seated againstsaid wall and held in position by the flange 17 is a packing of asbestos19, which eflectively prevents any smoke or soot from passing'betweenthe walls of the thimble and cap and entering the room. I

In connection with the thimble 5 I employ a collar 20 for securing asection of stovepipe 21 within the thimble when the cap is removed. Thecollar consists of a cylindrical body portion 22, provided with integrallongitudinally-extending ears or arms 23, to which are secured in anysuitable manner terminal lugs or pins 24, adapted to engage thebayonetslots 16 in the thimble and by'means of which the collar islocked to the chimney-breast. The collar is provided with an annular rim25, which engages the annular socket in the flue-thimble 5, said rimbeing hollow and provided with a backing of asbestos or similar material25 to form an air-chamber 26, similar to the air-chamber 10 in theflue-cap. As a means for retaining the stovepipe 20 Within the thim bleI provide said pipe with projecting lugs or pins 27, which engagebayonetslots 28 formed in the body of the collar.

In practice the thimble is fastened in the opening in the chimney-breastwith the annular socket thereof arranged flush with the plaster, so thatwhen the flue-cap is inserted and given a slight turn the head of saidcap will snugly fit the socket, as clearly shown in Fig. l of thedrawings, thereby forming a IIO smooth surface, which may besubsequently papered or otherwise covered to give the same a neatappearance. I

When it is desired to insert a pipe into the flue, the cap is removedand the collar inserted in the thimble and looked, after which thesection of stovepipe is introduced and locked in the manner beforedescribed.

Two or more sections of pipe may be securely locked together by forminga bayonetslot in the end of one pipe for engagement with a pin or lug onthe endof the adjacent section of pipe, therebydispensing with-the useof Wires and similar auxiliary fastening devices.

Having thus described the invention, what is claimed is- 1. In a deviceof the class described, a thimble having one end thereof extendedlaterally to form a terminal socket, and a closed tubular flue-caphaving an enlarged head adapted to engage said socket, the walls of saidhead being spaced apart to form an air-chamber.

2. In a device of the class described, a thimble having one end thereofextended laterally to form a terminal socket, and a closed tubularflue-cap having an enlarged head adapted to engage said socket, thewalls of said head being spaced apart to form an air-chamber, saidthimble and cap being provided with interlocking parts.

3. In adevice of theclass described, athimble having one end thereofextended laterally to form a terminal socket, a closed tubular fluecaphaving an enlarged head adapted to engage said socket, the walls of saidhead being spaced apart to form an air-chamber, and a packing interposedbetween the head and socket.

4E. Inadevice of the class described, a thimble having one end thereofextended laterally to form a terminal socket, and a tubular fluecaphaving its opposite ends closed and one end thereof provided with anenlarged head adapted to engage said socket, the walls of vsaid headbeing spaced apart to form an airchamber.

I to form a terminal annular socket, and a tubular flue-cap having itsopposite ends closed and one end thereof provided with an annular headadapted to engage said socket, the walls of said head being spaced apartto form an air-chamber,said thimble and cap being provided withinterlocking parts.

6. In a device of the class described, athimble provided withbayonet-slots and having one end thereof extended laterally to form aterminal socket, and-a flue-cap having an enlarged head fitting'withinthe socket and provided with laterally-projecting .lugs adapted toengage said bayonet-slots forlocking the parts together, the walls ofsaid head being spaced apart to form an air-chamber.

- 7 In a device of the class described, athimble having one end thereofextended laterally to form aterminal socket, a flue-cap provided at oneend with an enlarged head adapted to engage said socket, the'walls ofsaid head being spacedapart to form an air-chamber, an annular flangeformed on the opposite end of the cap, retaining-strips extendingtransversely across said cap, and-a'packing interposed between theflange and .said retainingstrips.

8. In a device of the class described, a thim ble having. one-endthereofextended laterally to forma terminal socket, aflue-cap having anenlarged-headadapted to engage said socket, the walls of said head beingspaced apart to form an air-chamber, an annular flange surrounding thehead of the cap,- and a packing carried by the cap and retained inposition by engagement with said annular flange, said thimble andflue-cap being provided vwith interlocking parts.

In testimony that I claim the foregoing as my own I have hereto aflixedmy signature in thepresence of two-witnesses.

, ALFRED T. BURCH.

Witnesses:

ALBERT BUTTS, W. A. SNITKEY.

